* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: inherit;
    display: block;
    width: 100%;
    height: 100%;
    /* 解决点击高亮*/
    -webkit-tap-highlight-color: transparent;
}

input {
    display: block;
    width: 100%;
    height: 100%;
    border: none;
}

img {
    display: block;
    width: 100%;
}

ul {
    list-style: none;
}

.clearfix:after {
    display: block;
    content: "";
    height: 0;
    clear: both;
}